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atroni [7]
3 years ago
9

1.State whether the relationship between the variables in the table is a direct variation, an inverse variation, or neither. If

it is a direct or inverse variation, write a function to model it.
2.How do the graphs of y=1/x and y=/5x+6

compare?

Mathematics
1 answer:
pav-90 [236]3 years ago
5 0

Answer:


Step-by-step explanation:

Left Pane

<em><u>Argument</u></em>

[Left Graph]: The table should be graphed to begin with. Some people don't like that idea very much, but it is a quick way to get an answer. I  took the liberty of adding 0,0

When a line goes through 0,0 the variation in this case is a direct variation. Then general equation for a direct variation is y = k*x

K is the slope. You should get 3.

m = (y2 - y1) / (x2 - x1)

<em><u>Givens</u></em>

  • y2 = 60
  • y1 = 9
  • x2 = 20
  • x1 = 3

<em><u>Solution</u></em>

  • m = (60 - 9) / (20 - 3)
  • m =  51 / 17
  • m = 3

<em><u>Answer</u></em>

Direct variation

Right Panel

<em><u>Argument</u></em>

The best way to show this is to (again) graph it. [Right Graph]

  • Red: y = 1/x
  • Blue: y = 5/(x + 6)
  • Green: x = 0
  • Orange x = - 6

The last two are asymptote where if the denominator approaches these values, the hyperbola goes upwards depending on what part of the graph being observed.

The 6 has the property of moving the graph left (x + 6). And the 5 has the property of stretching the graph up and down. Note the word used is stretched not moved.

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Answer:

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Step-by-step explanation:

(x-4)(x^2 - 5x - 6)

Multiply the x by everything in the second term

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Multiply the -4 by everything in the second term

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Add everything together

I like to line them up vertically

x^3 -5x^2 -6x

      -4x^2 +20x +24

-------------------------------

x^3 -9x^2 +14x +24


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Step-by-step explanation:

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